1156001039 has 2 divisors, whose sum is σ = 1156001040. Its totient is φ = 1156001038.

The previous prime is 1156001029. The next prime is 1156001083. The reversal of 1156001039 is 9301006511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1156001039 - 2⁴ = 1156001023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156000999 and 1156001017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156001029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578000519 + 578000520.

It is an arithmetic number, because the mean of its divisors is an integer number (578000520).

Almost surely, 2^1156001039 is an apocalyptic number.

1156001039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156001039 is an equidigital number, since it uses as much as digits as its factorization.

1156001039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1156001039 is about 34000.0152794083. The cubic root of 1156001039 is about 1049.5087767264.

The spelling of 1156001039 in words is "one billion, one hundred fifty-six million, one thousand, thirty-nine".